The NationalDeepwater Horizon oil spill, five years laterApr 15, 2015 | 10:28It's been nearly five years since the Deepwater Horizon oil spill. More than three million barrels of oil gushed into the Gulf of Mexico. Paul Hunter takes us back to Louisiana.

The NationalPhotographer Camille Seaman captures an icy landscape that's melting awayMar 2, 2015 | 10:58Camille Seaman is a photographer with a passion for ice. She's working in Alaska, raising the alarm about a landscape that's melting away.